Eyelet-inserting tool



.June 23, 1925.

' J. H. BRADNACK EYELET INSERTING TOOL Filed'OCt. l0. 1923 Patented June 23, 1925.4

UNITED STATES PATENT OFFICE.

JOHN H. BRADNACK, 0F NEW HAVEN, CONNECTICUT, ASSIGNOR TO THE TUBULAR PRODUCTS COMPANY, OF SOUTHINGTON, CONNECTICUT, A CORPORATION;

v EYELErINsEnTING moon. i"-

. Application sied oefoiwrY io, i923. `semi No. 667,655.

To all inkom t may concern: l f Be it known that 1,' JOHN H. BRADNAGK,

fa citizen of the United States, residing at lNew Haven, in thev county vof New Haven and VState of Connecticut, have invented.- certain new and useful Improvements in Eyelet-Inserting Tools, of which the following is aspeciication.

My invention relates to` eyelet spreader and a punch of substantially ordinary form and involving theV usel of an upwardly directed stein or neck thaty is entered intothe opening in the eyelet and that I projectsabove the border walls of the opening `inthe tubing, said means serving to pr@ )"vide` a substantially solid and firm backing for sustaining the blow of the punch under conditions of use and also beingadapted to Vbe collapsed to drop said stem'o/r'neck after the eyelet has been operated upon sofas to clear the adjacent walls of the opening and Vthe eyelet and thereby permit of shifting the tubing freelylfto another position.

In Vthe accompanying drawing Figure 1 is a front elevation of part of a ahfpunch press of' ordinary form and vthat is Aequippedwith an eyeletinserting tool embodying my invention. y

Figure 2 is a side elevation ofthe tool shown in Fig. 1 on an enlarged scale. Figure 3 is a plan view of the same. Figure 4: isa sectional view on the line .t- 4 of Fig. 3.

Figure 5` is a sectional view yon the line 540i Fig-3. y v A rFigure dis afragmentaryview showing the wedge and yadjacent vparts in ,the collapsed position. Figure 7 is a fragmentary View of ished eyelet. Figure 8 is a sectional view on V8 8 of Fig. 7.

Figure ,9,isan elevational view of the the line .j improvements in eyelet vinserting tools, for use in inserting punch with the socketvindicatedby broken Y KK Said'spreader 10 and punch 13 are adapt- I ed for, the insertion of eyelets or eyelet rivets .1'5" as a liinivsh or border wall for the openings 416 in tubing'or pipe 17. The tubing 17 may beef aluminum and used for carrying.

conducting wires for the wiring systems of automobiles and the openings 16 are provided fo'r theV passage ofbranch or individual wires. Said eyelets comprise a barrel structure 18 that tits within the opening. 16 Vand a rolled flange-like head 19 jat thel upper end that engages with the outer face of the tubing, and in operating upon said eyelet 15 the lower end portion 20 is rolled over to providea fiangestructure for being.

opposed to the inner face of the tubing.

-The general structure lof the eyelet 15 is Vcurvedto correspond to the curvature of the tubing.

`The active cooperating facesV of the spreader 10 andl the punch 13 are of the usual form; Thus thesprea'der 10 has an kupwardly projecting neck or 'head 21lthat is generally of tapered form in cross-section, the side walls merging with a shoulder structure 22 that serves as a seat and guidey for the eyelet and that receives the eect of the blow of the punch. :The punch 13 liasfa cavity 23 that is generally the reverse of the opposed structure of the spreader as described and fits thereover, with the eye-v vlet interposed therebetween.

Y In the position for use the neck or head 21 projects upwardly from the interior of the tubing through the opening 16 so as to be enclosed by the adjacent border wall structure 24 `of the tubing 17, and in order to permit ofv shifting the tubing relatively to the spreader 10 theflatter must lbe dropped to provide the necessary clearance for said neck, or head 21.

The structure to be described provides for doing this and also provides a substantially solid or rigid backing or anvil structure for sustaining the blow of the punch.

Said structure, as brie'iiy described,'cornin the form otl a movable structure and means for cooperating therewith for eliecting the necessary movement, said means in the present instance being in the form of a wedge 26.

Said holder 25 is supported 'for swinging movement by one end by means of a pivotal pin 27 and is swung upwardly to the proper operatingposition by the engagement of the free end portion 28 with the wedge 26, the latter being moved longitudinally and riding Valong the bottom wall 29 of the tubing 17.

rllhe wedge '26 is provided with a control rod 31that extends along the inside of the tubing 17 and has the out-er end 32 projecting beyond saidv tubing 17 so as to provide access by suitable operating devices. Said devices comprise a strap-lever 33 that is connected to the outer projecting'end 32 that is operatively ysupported from the frame or base structure 34 in any proper'V manner.

Said base 34 is a laterally elongated structure and I iind it desirable to provide an operating handle 35 adjacent the work. Said. handle 35 is mounted on a lever 36 and the latter is operatively connected to the strap-lever 33 by means of a connectingrod 37.

' The spreader holder 25 is pivotallyl connected by means of the pin 27 mentioned to the inner end of ainain bar 38 that is in the yform of an elongated structure that tits -loosely within the tubing 17 and is rigidly( supported by its outer end portion 39. As shown, said outer end portion 39 is entered into a hole 40 in a `block 41 that constitutes the adjacent end portion of the vbase structure y34 and is held in place by means of a set-screw 42.

As a detail, the control rod 31 for the wedge 26 is housed within a groove 43 on the underside of the main rod or bar 3S.

The control rod 31 is operatively connected to the strap-lever 33 through the inediumo't a binder-block 44 through which i it extends7 being held in place by means ot the set-screw 45. A pivotal screw 46 connects the binder-block 44 with the straplever 33.

A back-stop and support 47 is provided for the control rod 31 in the form ot a strap having an opening for the rod and which may be supported for adjustment from the base. As shown, said back-stop and support 46 is part ot a right-angled piece of strap material that has the supporting branch 48 longitudinally directed, said branch 4S having an elongated opening 49 for 'the set-screw 42 and being held in place by means oi" a nut 50.

The base 34 is secured to the table 11 in any proper manner, as by means of bolts entered through suitable holes 51 in the opposed or work-end portion of the base structure 34. Said work-end portion 52 is provided with a deep groove 53-to'r'receiving a mainanvil-block 54 that has av semi-circular seat 55 for a bushing 56 that is adapted tor the particular work, the parts being positioned relatively one to the other b y means of a pin-and-socket structure 57.

The bushing 56 has a semi-circular seat 5S that tits and is adapted to receive the bottom wall 29 of the tubing 17 and thus sustain the blow oi' the riveting or heading operation. l

In use, the spreader holder 25 and the 'wedge 26 combine to veffectively till the pip-e or tubing so that there will be operatively a rigid anvilstructure to sustainV the 'effect oi'the blow of the punch'. l 'Y rIhe structure shown Vancl describ'edpermits ot' obtaining improved loperating re- "sults, t-he work performed therewith being superior to that which is obtained or obtain-v able by thev usual hand methodsV of noperation. f

I claim as Vmy invention`:-'

1. An eyelet inserting tool for 'use with j punch presses comprising a base structure, a bar struct-ure supported by 'one end from said base structure and having vmeans at the other end for receiving the eyelet-spreader, said other end being in the form vor 'a 4swing-v ing structure that is connected to the ad` jacent portion oi' `said bar by means'ot a hinge connection, and a wedgesup'ported 'for 10o longitudinal movement adapted to cooperate with the tree end portion of 'said swinging structure. V

2. In' a combination for inserting l'eyelet rivets 'within the border 'portion of openings 105 in tubing and involving the kuse of a spreader for the eyelets having a neck for being entered from within the tubing through the opening in the tubing, said spreader having a die surface beneath said neck adapted to flange the inserted end ot vthe eyelet rivet, a 'holder for `said spreader K supported for movement generally toward r and away from the said border portion,V and means Jfor positively moving 'said holder to- 115 wards said border portion.

3. In combination, 'a `holder for an eyeletv spreader and a wedge adapted to be housedV wit-hin the interior of a tubing structure, said holderbeing supported for 'movement 120 generally transverse to the axis of thetubing struct-ure, said wedge being positioned, so a's'to be interposedrbetween said holder'"V on one side and the opposed wall of said tubing structure on the other `side, and said lholder being positioned so yas to make -contact with the opposed wall of t'lie'tubin-g on the `sideopposite that of said wedge. i

4. In combination in mechanism lfor inserting eyelet rivets as Va lining 'for the 130A border Wall of openings in the peripheral Wall of tubing, a spreader having a neck for being entered into the opening from Within the tubing, a holder incorporated in the structure of said spreader, a positioning bar operatively connected to one end of said spreader and holder and extending longitudinally outward from said end, the

other end of said spreader and holder being free for limited transverse movement, a 10 wedge for cooperating With said free end, and an operating-rod connected to said Wedge and extended 1n parallelism With Said bar.

lJOHN H. BRADNACK. 

